NHQ203B400T5

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Temperature Sensors - NTC Thermistors - are widely used in applications where accurate temperature sensing is required. The most common devices are thermocouples, RTDs (resistance temperature detectors), thermistors, and thermopiles. NTC thermistors are one type of thermistor that exhibits a decrease in resistance with an increase in temperature. The NHQ203B400T5 is a NTC thermistor manufactured by Murata that utilizes this principle. This application note discusses the application field and working principle of the NHQ203B400T5.

The NHQ203B400T5 is used in a wide range of applications where temperature measurement is necessary. These applications include industrial controls, HVAC systems, automotive applications, medical equipment, and consumer product temperature measurement. The NHQ203B400T5 is ideal for many applications because of its high accuracy, low cost, and small dimensions. The device is capable of measuring temperatures from -30 to +125°C and is available in a variety of package sizes.

The NHQ203B400T5 utilizes a semiconductor material that has a negative temperature coefficient (NTC) of resistance. This means that the resistance of the thermistor decreases in response to an increase in temperature. This allows the device to serve as an indication of the ambient temperature. The device is composed of two parts, a base metal plate and a semiconductor material that is sensitive to temperature. When temperature changes, the semiconductor material changes its resistance which causes a current (I) to flow or voltage (V) to drop. This relationship between resistance (R) and temperature is represented by the following equation: R = R0 [1+aT], where R0 is the resistance at a given temperature (0°C) and a is the thermistor coefficient that is determined by the device\'s characteristics.

The process by which the NHQ203B400T5 senses temperature changes is relatively simple. When a current is applied to the device, the semiconductor material\'s resistance changes as the temperature varies. This results in a corresponding change in voltage. These changes can then be monitored to determine the ambient temperature. This process can be used to accurately measure temperatures from -30 to +125°C.

The NHQ203B400T5 is a very versatile type of thermistor. It is well suited for a wide variety of applications, such as industrial controls, HVAC systems, automotive applications, medical equipment, and consumer product temperature measurement. The device is capable of measuring temperatures from -30 to +125°C and is available in a variety of discrete package sizes. Furthermore, the device is highly accurate and relatively simple to use. The thermistor\'s negative temperature coefficient of resistance ensures that the device will accurately measure changes in temperature.

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